Ventilator.



F. A. MOLANE, E. H. FRIEDRICH n R. B. WARNER.

VENTILATOR.

APPLICATION FILED MAY 4, 1912.

Patented Nov. 4, 1913.

2 SHEETS-SHEET l.

COLUMBIA PLANMDAPH co.,wAsHmn'rfwA Dy cl v \P. A. MOLANE, E. H.FRIEDRICH & R. B. WARNER.

VBNTILATOP..

APPLICATION FILED MAY 4, 1912.

. 1,077,847. Patented-Nov. 4, 1913.

2 SHEETS-SHEET 2.

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UNITED sTATEs1 PATENT oEEioE.

FREDERICK A. MCLANE, ERNESTk I-I. FRIEDRICH, .AND ROBERT B.'WARNER, OF

HOLYOKE, MASSACHUSETTS.

- VENTILATOR.

Patented Nov. 4, 1913.

Application led. May 4, 1912. Serial No. 695,192.

To all whom t may concern: n

Be it known that we, FREDERICK A. MCLANE, ERNEST H. FRIEDRICH, and Ro-ERT B. WARNER, citizens of the United States, residing at Holyoke, inthe county of Hampden and State of Massachusetts, have invented new anduseful Improvements in Ventilators, of which the following is aspecication.

This invention relates to ventilators for chimneys or ues andparticularly to that class known as co'wls, wherein a rotatable memberis adapted to be revolved. to automatically regulate the draft.

The primary object of the invention is to provide a ventilator or cowlhaving means for automatically closing or sealing the same to shut odthe outside atmosphere.

A further object of the invention is to provide a ventilator or cowlhaving means for closing or sealing the same from the outside atmosphereand embodying a device which is fusible in case of Ere and operative torelease an outside damper and prevent draft through the cowl orventilator.

A still further object of the invention is to generally improve theoperation of ventilators o-r cowls and the means for controlling anoutside damper, and to always maintain the several parts in reliableoperative condition.

With these and other objects and advantages in view the inventionconsists in the construction and arrangement of the several parts whichwill be hereinafter described in preferred form and the essentialfeatures constituting the invention specied in the appended claims.

In the drawings: Figure 1 is a vertical sectional view of the ventilatoror cowl and a portion of a roof, the ventilator or cowl embodying thefeatures ofthe invention. Fig. 2 is a horizontal section taken in theplane of the line 2-2, Fig. 1. Fig. 3 is an enlarged detail sectionalview of a portion of the device. Fig. 4 is an enlarged detail sectionalelevation showing the swivel. and fusible link of the-damper controllingcord or cable. j.

The numeral 5 designates a vstationary tubular support or member adaptedto be fixed to a roof 6 over a Ventilating' open ing '7, a guide arm Sdepending from the roof adjacent to said opening for a ypurposeexplained. Y The which will be presently fixedv cylindrical support 5may be of any preferred constructiom, and has arranged interiorlythereof upper and lowerf spiders 9 and 10, and in the center of thelower spider 10 the lower end of a tubular post or upright 11 isstepped, the said postV extending upwardly through the spider 9 andterminating any suitable `or desirable distance above the upper end ofthe cylindrlcal support 5. Coperating with the cylindrical support 5 isthe usual form of hood or rotatable member 12 provided with a top vane13, a horizontal arm 14 onrwhich a weight 15 is adjustably mounted andalso formed with the ordinary opening or inlet 16. 'Ihe lower extremity17 of the hood rotatably embraces the upper extremity of the cylindricalsupport 5 and is free to rotate on the latter as in the usual cowlconstructions, and is also provided with avspider 17a above the upperend of the support 5 and through which the post 11 extends. Dependingfrom the interior of the hood and in alinement with the post 11 is asocket member 18 which is of hollow form and has an opening 19 in theside nearest the opening 16 of the hood and is also provided with ahorizontal partition 20 with an opening 21 therethrough and a lowerspace collar 22 which fits over the upper extremity of the post 11. Asshown by Fig. 3, the horizontal partition 20 has a depending flange 23surrounding the opening 21, and in the upper end of the post 11 anannular bearing member 24 is secured` the contiguous faces of the ange23 and the annular member 24 having suitable grooves or races therein toreceive balls 25. The inner portion of the flange 23 andthe outerportion of the annular member 24 are provided with reversely extendingauxiliary anges 26 and 27 which inclose the grooves or race-ways for theballs 25 and by this means said balls are retained in place. Thisconstruction and arrangement of Yflanges and balls provide a thrust ballbearing which renders the operation of the hoo very easy and withoutfriction relatively to the post 11. In the upper part of the socketmember 18 adjacent to the opening 19 a guide fsheave or pulley A28 ismounted, and trained thereover is a pull-cord or cable 29 which passesthrough the opening 19 and after engaging the said guide sheave orpulley 28 extends downwardly through the SFIy opening- 21, the annularcollar 24, and 'the post 11 and continues,throughV the opening 7 andthrough the lower extremityfof the guide 8. From the socket 18 the cordor cable 29 is directed downwardly toward the bottom of the hood 12 andpasses over aguide sheave or pulley 30 and' frein the latter extendsupwardly to the upper 111- ner portion of a damper 31. The damper 3l iseccentrically lulcrumed as at the `greater portion ofthe.damperbeingbelen' its .telefilm .and having' thereon aweight device. 33: which willinsure the automatic elosingy of the damper when released by theerdY0.17 cable 29- f T O' prevent twisting of the 00rd, .Cable 0.11 vchain29Uit ishprovided vat an vinter1 nediate point witha ball bearing swivelM ,.clearly shown by Figi, and consisting ot'- a head f3.5.. providedwith. a Socketmeuiber .36 han ine' a .Central .opening 317 andseimlablrat.- ta-@hed t0. the head- The soeketv member 3 6 is. formednyith a ballrace 3,8, and movably fitted within the sai'd soclietinember is acoupling head 39 also having a ball race 40.. andV a. shank 41movablyextending' through the opening 3 7 and terminating` in an eye 42at fits. lower. end. Between the head 39 and socket member andjengagingtheball races 4,0. and 38is-a..plural`ity of balls 43.` ,The upper endofthe head isalso formed with( an eye 44 and the cord, cable or chain 29has its members attached to the eyes 212 and `all. The ball bearingswivel as just explained prevents the cord, cable or c'h'ain 'fromtwisting, and the turning, of the ventilator in ,opposite directionsdoes not inthe least aii'fect the said Acoli-'(1, cable or chain. The cord, cable or. .chain 29 a.lso embodies an intermediate fusible devicewhich will serve as means for auto: matically releasing and closing thedamper il in the event of fire and thereby Shut off lall draftrjthro-ughthe Ventilator. or cowl. This fusible means embodies a. fusible link#Lhaving eyes 46 secured in. opposite 'ends andtowhich the portions ofthe cord, cable or, chain are attached.

. F rom the foregoing the. Operation of the i device .will be 'readilyVunderstood, and. the damper 31 may beset at anyangle between Yerticaland horizontal positions so as .to

regulate the opening 16 and the '1 draft or ietilationby lmeans of the'.hood 12and cylindrical support 5. 'In 'setting fthe .damper, the cord,cable. or chainQQ .is drawn downwardly anyV distance desired. and.accordance.- with .the amount of Ventilatien Vdes'ired and. isheld-.tantby being suitably secured within the building- The damper iny.be..relea'sed .at anyjtflne by slackening thefcrd, Cable o'. 'chainQEandwlill auto;- matically close by A reason of the eccentric of' thesame and the weight de- Vice 323-. Ie the event Qfire. the liek willhbeor fused and 'the cord, cable or chain thereby slackened and the damperVreleased, thus permitting the latter to automatically close. l'n factthe damper 31 automatically closes under allv conditions when the cord,cable or chain is slackened suficientlywo permit a closing' operationthereof. rPhe improved ventilator will be Yi'ound exceptionallylconvenient and advantageous; in tS. operation, and it 4will` beunderstood thatthe proportions, ldimensions and .minor details. be,Inoded without departing from the spirit of the invention. Wmtisdainedis.: Y 1.111 a yentilator. of the class, specified, the combinationlwith fixed tubular support, a head rotatably mounted on the saidsupport, atubular post rising from thesupport and extendingupwardlyintothe head, llspost ;bcing. free oii engagement relatively to the head, ahollow socket depending from the head and haf/'ingthe upper .end of.thepost mov/ably extending `into 4the lower portion thereof, a. damper.Qinounted in the headnnd:controlling communication of the latter .withthe atmosphere, and. a pullfdevice,,attached to the damper andextelitlilfig.ntov and; downwardly through a portiQIl Ofthe sockety andalso through the postte a pointgbelow the tubular support, ananti-frictional bearing being. interposed between the upper extremity.of vthe post and the adjacent portion of the socket.

A lventilator of ythe class specified, a fixed tubular support andaheadrotatably IIlQunted on said support and havingagravitiltll'gdaniperin theopen end thereof, combined wth, a tubular postrising from the support and extending upwardly into the head, ahollowsocket "depending from the headand 19.05.615? engaging over'theupper end. o f the pest, ,the .tube and socket unitedlyorinlnggguide.means, and a pull device extending upwardly through. the.post anda portion .off thezsocket to the. center. of rotation of thehead and projecting outwardly through the side offsaid socket Vanddownwardly to and loosely .engaging the-.lower portion: fof the headand. thence continuing upwardly and attached to the top portion of.thedainpen In testimony whereof we have hereunto our hands in presenceof two subscribing witnesses. l

FB E RlCKg. ERNEST 1+i. IfRI,El)BICI-l'. ROBERT B. VARNER.

Enaivon A. 'Bnoons cp'ie's of his patent may b obtenga nii?hye'iijtsgieitb Washington, I).v C.

yiarlgdrcssinig the Commissioner of Patents, $7

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